First post on here but have had some helpful tips from you lot in the past. So i've got a fender jag MIJ 1994 and have recently upgraded the pickups to Seymour duncan quarter pounders, both neck and bridge. I installed them and both worked fine for about a month but now the neck pickup has stopped working properly. With the top switch in 'lead' position the neck pickup is super quiet. With the top switch in 'rhythm' mode the neck pickup is silent. The bridge pickup is still nice and loud.
Is this a pickup fault? I've re- soldered the wiring but still no good. Any help much appreciated.